Finding the Fourth Proportional to 1,056.03, 1,457.31 and 613.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,056.03 : 1,457.31 = 613.94 : x
2. Step 2: Convert to fraction form
   1,056.03/1,457.31 = 613.94/x
3. Step 3: Cross multiply
   1,056.03x = 1,457.31 × 613.94
4. Step 4: Simplify right side
   1,056.03x = 894,693.61
5. Step 5: Solve for x
   x = 894,693.61/1,056.03
6. Step 6: Final answer
   x = 847.22